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P1117 Chevrolet Code - Engine Coolant Temperature Signal Out-Of-Range Low

Quick Answer

The P1117 code for Chevrolet vehicles indicates that the Engine Coolant Temperature (ECT) signal is out of range low. Common causes include Faulty ECT sensor, Wiring issues in the ECT circuit, Malfunctioning ECM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1117 Chevrolet indicates Engine Coolant Temperature Signal Out-Of-Range Low.
Common causes
Common causes include Faulty ECT sensor, Wiring issues in the ECT circuit, Malfunctioning ECM.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1117 Chevrolet Description

The P1117 code for Chevrolet vehicles indicates that the Engine Coolant Temperature (ECT) signal is out of range low. The ECT sensor is responsible for providing the engine control module (ECM) with information about the temperature of the engine coolant. This information is crucial for the ECM to adjust fuel delivery and ignition timing to ensure optimal engine performance and efficiency. When the ECT signal is out of range low, it means that the temperature reading is below the expected range, which can lead to various issues with the vehicle's operation.

OBDII Code P1117 Chevrolet - Engine Coolant Temperature Signal Out-Of-Range Low
P1117 Chevrolet Code - Engine Coolant Temperature Signal Out-Of-Range Low

Common Causes of P1117 Chevrolet

  1. Faulty ECT sensor
  2. Wiring issues in the ECT circuit
  3. Malfunctioning ECM
  4. Cooling system problem causing engine to run too cool
  5. Low coolant level

Symptoms of P1117 Chevrolet

  1. Check Engine Light is illuminated
  2. Engine running rough or stalling
  3. Poor fuel economy
  4. Difficulty starting the engine
  5. Coolant temperature gauge reading abnormally low

How to Fix P1117 Chevrolet

  1. Begin by diagnosing the root cause of the issue using a diagnostic scanner to read the code and check the ECT sensor's readings.
  2. Inspect the ECT sensor and its wiring for any damage or corrosion, replacing the sensor if necessary.
  3. Test the ECM to ensure it is functioning correctly and reprogram it if needed.
  4. Check the cooling system for any leaks or malfunctions that may be causing the engine to run at low temperatures, repairing as necessary.
  5. Clear the diagnostic code and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P1117 Chevrolet

The cost of repairing a P1117 code on a Chevrolet can vary depending on the specific cause of the issue. In general, replacing the ECT sensor can cost between $50 and $200, while diagnosing and repairing wiring issues or ECM problems can add to the total cost. Labor rates at auto repair shops can range from $80 to $150 per hour, and additional costs for parts and diagnostic time may apply. It's advisable to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's make and model, as well as the local labor rates in your area.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1117 Chevrolet Code

1. What are the common symptoms of OBDII code P1117 in a Chevrolet vehicle?

- Common symptoms include the engine running hotter or colder than normal, poor fuel economy, and potential overheating issues.

2. What are the possible causes of OBDII code P1117 in a Chevrolet?

- Possible causes include a faulty engine coolant temperature sensor, a wiring issue in the coolant temperature sensor circuit, or a problem with the engine control module (ECM).

3. How can I diagnose the cause of OBDII code P1117 in my Chevrolet?

- To diagnose the issue, you can use a scan tool to read the code, test the engine coolant temperature sensor for proper resistance, and check the wiring for any signs of damage or corrosion.

4. Can driving with OBDII code P1117 in a Chevrolet cause further damage to the vehicle?

- Driving with this code may lead to poor engine performance, reduced fuel efficiency, and potential overheating issues if the engine coolant temperature is not accurately regulated.

5. What is the typical repair process for fixing OBDII code P1117 in a Chevrolet?

- The typical repair process involves replacing the faulty engine coolant temperature sensor, repairing any damaged wiring in the circuit, and clearing the code from the ECM.

6. Are there any DIY tips for addressing OBDII code P1117 in a Chevrolet?

- DIY tips include checking the coolant level, inspecting the sensor and its wiring for visible damage, and ensuring proper connections before considering sensor replacement.

7. How much does it usually cost to repair OBDII code P1117 in a Chevrolet?

- The cost of repair can vary depending on the cause of the issue, but on average, replacing the engine coolant temperature sensor can cost between $50 to $150, excluding labor.

8. Is it safe to continue driving my Chevrolet with OBDII code P1117 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to potential engine overheating or other related issues that may cause further damage.

9. How long does it take to repair OBDII code P1117 in a Chevrolet?

- The repair time can vary depending on the complexity of the issue and the availability of parts, but typically, the repair can be completed within a few hours by a professional mechanic.

10. Can resetting the ECM clear OBDII code P1117 in a Chevrolet temporarily?

- Resetting the ECM may temporarily clear the code, but if the underlying issue, such as a faulty sensor or wiring problem, is not addressed, the code is likely to reappear.

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